How to research a quest?

Question

What would be the best way to research a quest when you've come to a halt?

Comments

It would be helpful if you elaborated on what you are looking for in an answer or gave an example.

Answer 1

I would recommend using one of the official supported fansites such as tibia.wikia.com.

Answer 2

If you want to do a quest only using the game info you need look at everything books,npcs,chests and well anything from the place you are looking has a story but you need to search by yourself :)

If you don’t care about spoilers there is a lot of sites that can help you with most of the quests

Answer 3

The best way to investigate and spoiler yourself about quests in my opinion is 

Tibia Wikia   (tibia.wikia.com)

There you'll find a lot of quests and they actually have a page for this:

You'll see the location, reward, requiered level, recomended level, name of the quest.

Hope this helps!